Live on Base Mainnet · chainId 8453
Protean Ledger — canonical scientific record
- Network
- Base Mainnet
- Chain ID
- 8453
- Schema
- protean.ledger.v1
- Deployment block
- 46,612,390
Proxy
0x2a6f84fA0a09b1c04F9edAccCF6De58F11a4a364Verification report · receipts
Verifying 0xf929…8e21
Legacy placeholder · sha256 anchor pending
Chain verification: PASS · Digest verification: PASS · Lineage verification: PASS · On-chain sha256 anchor: PENDING · On-chain pointer path: LEGACY
This record predates the current mirror-artifact automation, and its on-chain pointer has two honest caveats: (1) the sha256 anchor is the literal string pending, not the artifact's actual hash; (2) the on-chain path (predicted from cycle_id + record_type at envelope time) does not match the actual artifact filename on the mirror — the authoring script writes record-<first10-of-recordId>.json. The real artifact for this record IS on the mirror; the record page surfaces a direct link to it. The artifact-sha256-equality check available for mirror_real records is not available here; chain identity, content digest, lineage edges, and indexer state digest checks all still verify.
Chain
Base mainnet · chainId 8453
Contract
0x2a6f…a364Transaction
0xb214…b2e6Block · Registered
#46,641,855Seven independent checks against indexed chain state. Each row shows the underlying evidence — block, transaction, digest, replay pointer — and links to the source you can recompute yourself. The chain is the authority; this page is a lens.
Receipts
Seven checks. Every value is real.
- 01.Record exists on chain (RecordRegistered event indexed)Pass
- 02.Record content emitted (RecordContentEmitted indexed)Pass
- 03.Indexer state digest reproduciblePass
- 04.No ancestor edges — this record is a root recordPass
- 05.Replay artifact sha256 — LIMITED (legacy placeholder · sha256 anchor pending)No data
This record uses a legacy placeholder replay pointer from before mirror artifact authoring was fully aligned with the Ledger write path. Two honest caveats: (1) the on-chain sha256 anchor is the literal string 'pending', not the artifact's actual hash; (2) the on-chain path (built from cycle_id + record-type at envelope time) doesn't match the actual artifact filename on the mirror (the authoring script writes record-<first10 of recordId>.json). The real artifact for this record IS on the mirror — the 'View on mirror' button below links to it directly. Chain identity, content digest, lineage, and indexer digest reproduction all still verify; the artifact-sha256-equality check 'mirror_real' supports is not available for this class.
- replayPointer
- git:proteanlabs1/ledger-mirror@main:artifacts/mainnet/record-cognition-45-1780070966.json#sha256:pending
- Class
- mirror_autonomous_pending
- 06.Not retractedPass
- 07.Not supersededPass
Verify locally
Four runnable commands. Each is grounded in this specific record. If you have cast, curl, and python3, you have everything you need.
1. Read this record from Base mainnet (no indexer trust)
cast call 0x2a6f84fA0a09b1c04F9edAccCF6De58F11a4a364 \ "getRecord(bytes32)" 0xf929615845000f6ce5c49ed67447630f54b95e0e70df9d88b08338716bc18e21 \ --rpc-url https://mainnet.base.org
2. Fetch the indexed record via the explorer API
curl -s "https://www.protean.sh/ledger/api/v1/records/0xf929615845000f6ce5c49ed67447630f54b95e0e70df9d88b08338716bc18e21" | jq .
3. Read the live indexer state digest
curl -s "https://www.protean.sh/ledger/api/v1/indexer/digest" | jq .
4. Reproduce the full digest from genesis
# Reproduce the full indexer state from genesis against any Base RPC. curl -sL https://raw.githubusercontent.com/proteanlabs1/ledger-mirror/main/scripts/index_ledger_from_genesis.py -o index_ledger.py python3 index_ledger.py --rpc https://mainnet.base.org \ --proxy 0x2a6f84fA0a09b1c04F9edAccCF6De58F11a4a364 \ --db /tmp/protean.db --from-block 46612390 --once python3 index_ledger.py --digest-only --db /tmp/protean.db # Compare to https://www.protean.sh/ledger/api/v1/indexer/digest